I've just run into a problem with my Flex Debugger - it basically stopped working. I tried reinstalling the Flash Debug Player and also tried restarting Flex Builder with the -clean option. All to no avail.
A Quick Google search however brought up this and this. It seems that several Firefox add-ons can break the Flex Debugger (this seems to be a bug with Firefox 3's handling of add-ons). For me personally, disabling the Google Toolbar add-on fixed the Flex Debugger. Other users reported that disabling Greasemonkey or Adblock provided a fix. I can live without the Google Toobar, but I cannot live without the Flex Debugger...
By the way, here's how to start Flex Builder with the -clean option, it can sometimes solve issues - though not in this case.
Run Terminal (/Applications/Utilities/Terminal)
Then enter:
2
3./FlexBuilder -clean

#1 by Dan Vega on 7/15/08 - 5:03 PM
#2 by robfitz on 7/20/08 - 10:19 PM
#3 by Arindam Biswas on 8/17/08 - 8:04 AM